Internal-combustion engine.



E. J. CONILL.

INTERNAL COMBUSTION ENGINE.

APPLlCATiON FILED NOV. 30, I914.

Patented Aug. 31, 1915.

5 mm wte z Z1! (biz/Z ufitlS 614100142135 -"n "Mum PL-\NOGRAPH C0,. \VASHINGTON. D. t.

rinrrnn s'ra'rns PATENT orrr cn.

rumour: J. GONILL, or rams, FRANCE.

INTERNAL-COMBUSTION ENGINE.

To all whom it may concern:

, Be it known that I, ENRI UE J. CONILL, a citizen of Cuba, residing at Paris, France, have invented certain new and useful Improvements in Internal- Combustion Engines, of which the following is a full, clear, and exact description.

This invention relates to explosion engines, particularly one for aviation adapted to drive two propellersrotating in opposite directions owing to the relative reaction between the shaft and the cylinders.

In the present invention both the crankshaftand the cylinders revolve, but in opposite directions, around the same axis; the cranks on the crank-shaft are 180 apart in phase; the cylinders are radially-disposed, spaced equiangularly, and arranged in groups or sets, one for each crank, and in each group all the pistons areconnected to the same crank by means of connecting rods which are mounted side by side. on the crank-pins; each cylinder is paired with a cylinder diametrically opposite in another set, the cranks to which the two cylinders of the pair are connected being 180 apart I in phase; and the axial separation in the several pairs of cylinders, that is, the space or distance between the axes of the pair of cylinders is the same throughout the several groups. Moreover, all the connecting rods of the various cylinders are each arranged symmetrically relatively to the longitudinal axes of their respective cylinders, they are all alike, and are built in an exactly identical manner, so that they can be replaced at will, whenever it is considered advisable. This peculiarity considerably facilitates repairing and limits the number of spare parts which it is necessary to carry when the engine is applied to an aeroplane.

A construction according to this invention. is illustrated diagrammatically in the accompanying drawing, in which Figure 1 is a longitudinal section, and Fig. 2 is an end view.

In the said drawing, 1, 1 and 1 are radial cylinders of odd number of one series, spaced equiangularly, each of the said cylinders driving directly the same crank 2 of the crank shaft 3 by means of the connect" Specification of Letters Eatent.

Patented Aug. 31, 1915.

Application filed November 30, 1914 Serial No. 874,594.

l and 1 as shown in Fig. 2, so that the crank 5, driven by the pistons of the second series by the connecting rods h, 2', Z2, respectively, has a phase angle of 180 relatively to the crank 2; but the cylinders 1, 1 and .1 on the one hand, and 4, 4 and 4 on the other hand are not in the same plane. The serles or sets of cylinders are transversely displaced to an extent sufficient to enable their connecting rods to engage directly with the corresponding crank 2 or 5. Moreover, the cylinders of each series or set are arranged helically on the crank case 6, so that the distance (Z separating the axes of two diametrically opposite cylinders is constant,that is to say, that as regards the cylinders 1, l and 1?, 4, 4 and 4, having con necting rods 6, f, g, 72,, 2', 7c, respectively, the distance between a and h is (Z, and it isthe same between f and i and between 9 and 76. Thus the moving masses of the pairs of pistons and connecting rods are always balanced, with the advantage that the connect ing rods engage directly with the crank pins 2and 5, which does away with the injurious oblique strains when a main connecting rod is used, and that they can be mounted by means of ball bearings on the crank pins 2 and 5. For the sake of convenience and The connecting rods are exactly alike and,

can be arranged in a larger number than three on the same crank pin, without using an excessively heavy main connecting rod. Nor is the invention limited to two sets or series of cylinders, but the number of sets should be even.

It is to be understood that the crank-case 6 and the crankshaft 3 rotate in opposite directions and that each drives its own propeller, not shown, for example in the manner described in my copending application Serial No. 872,567, filed November 17, 1914.

What'l claim is:

1. The combination of a plurality of sets of radial cylinders arranged helically and revoluble about the same axis, each cylinder of each set being paired with a diametrically opposite cylinder of another set, the several pairs of cylinders having the same axial separation; an oppositely rotatable crank-shaft arranged at the axis of revolu-' tion of the cylinders and having a crank for each set of cylinders, the crank for each set of cylinders having a phase difference of, 180 from the crank for the set containing the cylinders that are diametrically paired apart in phase; a plurality-of sets of radial cylinders arranged helically and revoluble around theflcranlcshaft in the opposite direction, one set for each crank, each cylinder of each set being diametrically opposite a cylinder of the: next adjacent set, the axial separation'of the pairs of cylinders Which are opposite each other being the c same throughout the entire system ofcylinders, and the number of sets of cylinders being even andthe number-of cylinders in each set being odd; pistons Workingin the cylinders; and connecting rods between the pistons and the cranks, v

.3 The combination of a rotary crankshaft havingtvv'o cranks 180 apart; a set of helically arrangedradial cylinders spaced equiangula-rly and revolubly about the crank-shaft and having pistons and connecting rods connected with one of the cranks; a second set of helically arranged radial cylinders spaced equiangularly and revolubleabout the crank-shaft and having pistons and connecting rods connected With the other crank; each cylinder of, the second set being diametrically oppositeone of the cylindersof the first set, providingcas many pairs of cylinders as there are cylinders in each set, the axial separation of the cylinders of the several pairsbeing the same; the said connecting rods being all exactly alike and arranged side by'side on the crank-pins of their respective cranks, and each being symmetr calvvlth respect to the axis'of its cylinder.

In testimony whereof I aiiix my signature in the presence of tWo subscribing Witnesses.

ENRIQUE J.GONILL. Witnesses: i v I MQLAWYSON Diana, 7 I S; S. DUNHAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' I v Washington, D. G. 

